I'm wanting to install BuddyPress on my sites. I attempted to install it on one site that is using Thesis but it broke the site so I removed the BuddyPress plugin via FTP as I couldn't get to the plugin page. The Thesis forum says they arn't compatible. So I've set up another new site install attached to a .org version of my domain name which I want to keep simple and install BuddyPress there.
It is only running Twenty Ten, nice and simple and I only have a couple of plugins and no content. I attempted to activate Buddy Press and it broke the site, I removed the plugin as I explained above via FTP, then I tried to do an automatic install of the buddypress plugin and got -
Fatal error: Call to undefined function is_site_admin() in /hermes/web10/b281/(my domain name)/wp-content/plugins/jet-event-system-for-buddypress/jet-event-system.php on line 39 -
I seem to be having an issue with this on other sites where I want to install it also. Any ideas?